For what value of A, the binary number 1000A12 represents 35?​

The solution of the system of equations  -10x - 9y = 10 and 8x + 9y = 10 is x = 10 and y = -3.33

From the question, we have the following parameters that can be used in our computation:

-10x9y = 10

8x +9y = 10

Express properly

So, we have

-10x - 9y = 10

8x + 9y = 10

When the above equations are added to one another, we have

2x  = 20

This means that

x = 10

Nexy, we have

-10(2) - 9y = 10

This means that

-9y = 30

S,o we have

y = -3.33

Hence, the soltuion is x = 10 and y = -3.33

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The study design is a prospective cohort study.
The key points that led to this conclusion are:
- Participants were selected at random from the total population and followed up over a period of 10 years
- Information on dietary intake and other risk factors was collected at the beginning of the study
- Participants were contacted every two years to update their information
- Outcome data was collected from a cancer registry

A more efficient study design in terms of time and cost for asking the same research question could be a cross-sectional study. This would involve recruiting a larger sample of people at one time point and collecting data on their dietary intake and cancer status. However, this design would not allow for follow-up over time to assess changes in diet and cancer risk. In a case-control study, researchers would identify individuals with colon cancer (cases) and those without (controls), and then compare their dietary antioxidant intake. This design typically requires fewer participants and can be completed more quickly, as it doesn't involve following participants over an extended period of time.

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The area of the triangle is 13.5m²

A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon.

There are different types of triangle: we have isosceles triangle, equilateral triangle, Scalene triangle e.t.c

The area of a triangle is expressed as;

A = 1/2 bh

where b is the base and h is the height.

A = 1/2 × 9 × 3

A = 27/2

A = 13.5m²

therefore the area of the triangle is 13.5m²

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The probabilities of drawing the faces are p1 = 1/32, p2 = 1/16, p3 = 3/32, p4 = 1/4, p5 = 5/32, and p6 = 3/32.

To determine the probabilities p1, p2, p3, p4, p5, and p6 in the absence of any other information on the die, we can use Shannon's statistical entropy.

The Shannon entropy formula is given by H = -∑(pi log2 pi), where pi is the probability of the ith outcome. We want to maximize the entropy subject to the constraint that the average value is 4.

Let's assume that the probabilities are not all equal to 1/6, and instead denote the probabilities as p1, p2, p3, p4, p5, and p6. We know that the average value is 4, so we can write:

4 = (1)p1 + (2)p2 + (3)p3 + (4)p4 + (5)p5 + (6)p6

We also know that the probabilities must sum to 1, so we can write:

1 = p1 + p2 + p3 + p4 + p5 + p6

To maximize the entropy, we need to solve for p1, p2, p3, p4, p5, and p6 in the equation H = -∑(pi log2 pi) subject to the above constraints. This can be done using Lagrange multipliers:

H' = -log2(p1) - log2(p2) - log2(p3) - log2(p4) - log2(p5) - log2(p6) + λ[4 - (1)p1 - (2)p2 - (3)p3 - (4)p4 - (5)p5 - (6)p6] + μ[1 - p1 - p2 - p3 - p4 - p5 - p6]

Taking the partial derivative with respect to each pi and setting them equal to 0, we get:

-1/log2(e) - λ = 0
-2/log2(e) - 2λ = 0
-3/log2(e) - 3λ = 0
-4/log2(e) - 4λ = 0
-5/log2(e) - 5λ = 0
-6/log2(e) - 6λ = 0

where λ and μ are Lagrange multipliers. Solving for λ, we get:

λ = -1/(log2(e))

Substituting this value of λ into the above equations, we get:

p1 = 1/32
p2 = 1/16
p3 = 3/32
p4 = 1/4
p5 = 5/32
p6 = 3/32

Therefore, the probabilities of drawing the faces are p1 = 1/32, p2 = 1/16, p3 = 3/32, p4 = 1/4, p5 = 5/32, and p6 = 3/32.

The complete question should be:

Consider a die with 6 faces with values 1.2.3.4.5.6. In principle, the probabilities to draw the faces are all equal so that after several draws on average the value is £ (1+2+3-4-5-6) = 3.5. Suppose now that the average value is found to be 4. In the absence of any other information on the dic, suggest a way to determine the probabilities pr.12.13.P4, P5:p? (hint: use Shannon statistical entropy)

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To find the critical value for a 99% confidence level, you will need to use the z-table, which lists the z-scores for different confidence levels. Here's a step-by-step explanation:

1. Identify the confidence level: In this case, it's 99%.

2. Calculate the area under the curve: Since the confidence level is 99%, the area under the curve would be 0.99 or 99%. The remaining 1% is split between the two tails of the distribution.

3. Determine the area in one tail: Divide the remaining area by 2 (1% ÷ 2 = 0.005 or 0.5%). This is the area in one tail of the distribution.

4. Use the z-table to find the critical value: Look for the closest value to 0.995 (0.990 + 0.005) in the z-table. This value corresponds to a z-score of 2.576.

5. Round the critical value: Since the question asks for the critical value rounded to two decimal places, the answer would be 2.58. So, the critical value for a 99% confidence level is 2.58.

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The path y = y(x) that makes the integral stationary. To find the path y = y(x) for which the integral ∫x*sqrt(1 + (y'(x))^2) dx is stationary, we will use the following steps:

1. Identify the integrand: The integrand is the function inside the integral, which is F(x, y, y') = x*sqrt(1 + (y'(x))^2).

2. Apply the Euler-Lagrange equation: The Euler-Lagrange equation is used to find the stationary points of integrals, and it is given by the formula: dF/dy - d/dx(dF/dy') = 0.

3. Calculate the derivatives: First, find the partial derivatives of the integrand with respect to y and y':
  - dF/dy = 0 (since F does not contain y explicitly)
  - dF/dy' = x*(y'(x)/sqrt(1 + (y'(x))^2))

4. Apply the Euler-Lagrange equation: Now, substitute the derivatives into the Euler-Lagrange equation:
  - d/dx(x*(y'(x)/sqrt(1 + (y'(x))^2))) = 0

5. Solve the differential equation: To find y(x), solve the differential equation obtained in step 4. In this case, the equation is somewhat challenging to solve analytically, so we might need to rely on numerical methods or seek a simpler form for the problem.

By following these steps, you can find the path y = y(x) for which the given integral is stationary. However, as noted earlier, solving the resulting differential equation might require advanced techniques or simplification.

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Answer: The correct answer is A

i have no clue if this is correct if it is goodluck lol

Answer:

The answer to your problem is, the range of the temperature data in degrees Fahrenheit is 15°F.

Step-by-step explanation:

In this scatter plot it represents the average daytime temperatures recorded in New York for a week.

highest temperature in a week from the scatter plot is 45°F.

lowest temperature in a week from the scatter plot is 30°F.

Range = 45°F - 30°F

= 15°F

Thus the answer to your problems is, the range of the temperature data in degrees Fahrenheit is 15°F.

The median weight of the players is 225 pounds.

To find the median weight of the players, we need to find the weight value that separates the 24th and 25th ordered weights. We can do this by looking at the box plot and determining the boundaries of the box, which contains the middle 50% of the data.

From the box plot, we can see that the box extends from 170 pounds to 250 pounds, so these are the weights that make up the middle 50% of the data. The median weight will be the weight that is in the middle of this range.

To find the median weight, we can take the average of the two middle values in this range. The two middle values are 220 and 230 pounds. So the median weight is:

(220 + 230) / 2 = 225 pounds

Therefore, the median weight of the players is 225 pounds.

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The work done in moving the particle from x=4 to x=4.5 is approximately 0.0828 joules, from x=4.5 to x=5 is approximately -0.0617 joules, and from x=4 to x=5 is approximately 0.0211 joules.

To calculate the work done, we can use the formula W = ∫F(x)dx, where F(x) is the force acting on the particle at a distance x from the origin. In this case, F(x) = cos((pi)x/9).

To find the work done in moving the particle from x=4 to x=4.5, we can integrate the force over the range of x=4 to x=4.5:

W = ∫[cos((pi)x/9)]dx from x=4 to x=4.5
W = [(9/pi)sin((pi)x/9)] from x=4 to x=4.5
W = 0.0828 joules

Similarly, to find the work done in moving the particle from x=4.5 to x=5, we can integrate the force over the range of x=4.5 to x=5:

W = ∫[cos((pi)x/9)]dx from x=4.5 to x=5
W = [(9/pi)sin((pi)x/9)] from x=4.5 to x=5
W = -0.0617 joules

Finally, to find the work done in moving the particle from x=4 to x=5, we can integrate the force over the range of x=4 to x=5:

W = ∫[cos((pi)x/9)]dx from x=4 to x=5
W = [(9/pi)sin((pi)x/9)] from x=4 to x=5
W = 0.0211 joules

Note that these calculations are approximate due to the use of numerical integration methods. However, they provide a good estimate of the work done in each case.

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There is weak evidence supporting the claim that the true mean is below the desired specification of 57 Pa.

Based on the given information, the p-value obtained from the hypothesis test is 0.095. The p-value represents the probability of observing a test statistic as extreme or more extreme than the one obtained, assuming the null hypothesis (i.e., the true mean is not below 57 Pa) is true. Since the p-value is greater than the commonly used significance level of 0.05, we fail to reject the null hypothesis. This means that we do not have enough evidence to claim that the true mean is significantly below 57 Pa.

Therefore, the conclusion is that there is weak evidence supporting the claim that the true mean is below the desired specification of 57 Pa.

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The Intermediate Value Theorem concludes that for a continuous function on a closed interval, if there are two points in the interval such that the function takes on two different values, then there must be at least one point in the interval where the function takes on every value between those two values.

Assuming its assumptions are met, the Intermediate Value Theorem (IVT) concludes that:

If a continuous function, f(x), is defined on a closed interval [a, b], and k is any value between f(a) and f(b), then there exists at least one value c in the interval (a, b) such that f(c) = k.

In other words, if a function is continuous on a closed interval and k is a value between the function's values at the endpoints of the interval, the function must take on the value k at least once within that interval. This theorem is particularly useful in determining the existence of roots or zeroes for a function in a specified interval.

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Let x=u+v, y=u+w, and z=v+w. Then by hypothesis, {z, y, z} is linearly independent.

Now, observe that x-2y+z = (u+v) - 2(u+w) + (v+w) = -u -w, and similarly, x+z-2y = -v-w and y-2z+x = -u-v.

Thus, we have expressed u, v, and w as linear combinations of x, y, and z. Specifically, we have:

u = (x-2y+z)/(-1)
v = (x+z-2y)/(-1)
w = (y-2z+x)/(-1)

Using this, we can rewrite any linear combination of u, v, and w as a linear combination of x, y, and z.

Suppose {u, v, w} is not linearly independent. Then there exist constants a,b,c, not all zero, such that au+bv+cw=0. But using the expressions above, we can rewrite this as:

a(x-2y+z) + b(x+z-2y) + c(y-2z+x) = (a+b+c)x + (-2a-2b+c)y + (a-2b-2c)z = 0

Since {z, y, z} is linearly independent, this implies that a+b+c = -2a-2b+c = a-2b-2c = 0. Solving this system of equations, we get a=b=c=0, which contradicts our assumption that not all the constants are zero.

Therefore, we conclude that if {u+v, u+w, v+w} is linearly independent, then {u, v, w} must also be linearly independent.

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Answer:

Step-by-step explanation:

9 - (-9) = 18

Don't be distracted by the Russian language, just look at the letters

Answer:

[tex]9 {x}^{2} {y}^{2} = 3•3•x•x•y•y

The expected count in the joint category of C and X is 3.4.

To find the expected count in the joint category of C and X, we need to calculate the row and column totals for categories C and X.

The row total for category C is the sum of the counts in the third row: 18 + 1 + 5 = 24.

The column total for category X is the sum of the counts in the second column: 10 + 6 + 1 = 17.

To find the expected count in the joint category of C and X, we use the formula:

Expected count = (row total * column total) / grand total

where the grand total is the total count in the table, which is 11 + 10 + 3 + 15 + 6 + 2 + 18 + 1 + 5 = 71.

Plugging in the values, we get:

Expected count in category C and X = (24 * 10) / 71 = 3.4 (rounded to 1 decimal place)

Therefore, the expected count in the joint category of C and X is 3.4.

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The figure gets shrunk to half and it will be in the third quadrant.

The process of increasing the size of an item or a figure without affecting its actual or original form is known as dilation. The size of the object can be lowered or raised depending on the scale factor of dilation provided.

As given in the question, the figure is rotated 180 degrees and dilated by a factor of 1/2. we have to describe the new figure.

Let us assume that the position of the figure is in the first quadrant. Then

after the rotation of 180 degrees of the figure, the figure will be in the third quadrant. If the figure is dilated with a scale factor of 1/2 then the figure gets shrunk to half of what it is as shown in the diagram provided.

The diagram is given below.

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We have the probabilities of drawing balls from the boxes to be

a) P(R₁) = 0.65957, b) P(G₁) = 0.34042, c) P(R₂ | R₁) = 0.375 d) P(R₂ | G₁) = 0.6, e) P(G₂ | G₁) = 0.4, and f) P(G₂ | R₁) = 0.625

Here clearly

G₁ is the event of drawing a green ball from Box A

and R₁ is the event of drawing a red ball from box A

In box A there are 31 red balls annd 16 green balls. Hence 47 balls in total Therefore,

a)

P(R₁) = 31/47

= 0.65957

b)

P(G₁) = 16/47

= 0.34042

Now in Box B there are 12 red balls and 20 green balls that is 32 balls in total

In box C there are 24 red balls and 26 green balls, that is 40 balls in total.

c)

We need to find P(R₂ | R₁)

This means that we need to find the probability of drawing a red ball second time, if the first ball is red.

If the first ball is red, then the next ball is drawn from Box B

Hence  P(R₂ | R₁) = 12/32 = 0.375

d)

Next we need to find  P(R₂ | G₁) This means that we need to find the probability of second ball being red when first ball was drawn was green.

If the first ball drawn is green, then the second ball would be drawn from Box C

Hence we get P(R₂ | G₁) = 24/40

= 0.6

e)

Now we need to find P(G₂ | G₁) Clearly, this woule be

1 - P(R₂ | G₁)

= 0.4

f)

Next we have P(G₂ | R₁)

This clearly is 1 - P(R₂ | R₁) = 0.625

Hence we have the probabilities of drawing balls from the boxes to be P(R₁) = 0.65957, P(G₁) = 0.34042,  P(R₂ | R₁) = 0.375  P(R₂ | G₁) = 0.6

P(G₂ | G₁) = 0.4 P(G₂ | R₁) = 0.625

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An iterative rule, aₙ to model the sequence formed by the number of seats in each row is: aₙ = 7n + 11

The row that has 102 seats is: 13th row

The general formula to find the nth term of an arithmetic sequence is:

aₙ = a + (n - 1)d

where:

a is first term

d is common difference

n is position of term

We are given:

First row = 18 seats

Second row = 25 seats

Common difference = 7

Thus:

aₙ = 18 + (n - 1)7

aₙ = 18 + 7n - 7

aₙ = 7n + 11

The row that has 102 seats is:

102 = 7n + 11

7n = 102 - 11

7n = 91

n = 91/7

n = 13

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Here is a method for creating an octagon out of three smaller shapes, its given below.

Make a sizable triangle with equal sides.

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The sum of 8 of the interior angles of a regular nonagon is 1120 degrees.

A nonagon is a polygon with 9 sides and 9 interior angles. The sum of the interior angles of any polygon is given by using the method (n-2) × 180 degrees, wherein n is the number of sides.

Therefore, the sum of the interior angles of a nonagon is (9-2) × 180 = 1260 levels.

Because the nonagon is a regular polygon, every of its interior angles has the equal degree. To discover the measure of every attitude, we will divide the sum of the interior angles through the wide variety of angles.

Therefore, the degree of every interior perspective of a ordinary nonagon is 1260/9 = 140 ranges.

To discover the sum of 8 of the interior angles, we are able to simply multiply the measure of each attitude through eight, which gives:

8 × 140 = 1120 degrees

Thus, the sum of 8 of the interior angles of a regular nonagon is 1120 degrees.

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The frequencies of the dominant red allele, the recessive white allele, and the incomplete dominance allele that produces pink flowers are 0.425, 0.475, and 0.55, respectively.

To solve for the alleles, we need to first determine the possible genetic combinations that could result in the observed flower colors. Let's use the following notation: R for the dominant red allele, r for the recessive white allele, and P for the incomplete dominance allele that produces pink flowers when paired with either R or r.

If we assume that the inheritance of flower color follows Mendelian genetics, we can use the Punnett square to determine the expected ratios of offspring for each possible combination of alleles. Here are the possible genetic combinations and their expected ratios:

RR (red) x RR (red) = 100% RR (red)
RR (red) x RP (pink) = 50% RR (red), 50% RP (pink)
RR (red) x rr (white) = 100% Rr (pink)
RP (pink) x RP (pink) = 25% RR (red), 50% RP (pink), 25% rr (white)
RP (pink) x rr (white) = 50% Rr (pink), 50% rr (white)

Using these ratios, we can calculate the expected number of each genotype based on the observed number of flowers:

RR (red) = 100
RP (pink) = 0.5 x (800 + 100) = 450
Rr (pink) = 2 x 100 = 200
rr (white) = 0.25 x 800 + 0.5 x 100 = 250

Therefore, the allele frequencies can be calculated as follows:

R = (2 x RR) + RP + Rr = (2 x 100) + 450 + 200 = 850
r = (2 x rr) + RP + Rr = (2 x 250) + 450 + 200 = 950
P = RP + (0.5 x Rr) = 450 + (0.5 x 200) = 550

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Vector AT's coordinates in the provided base are (8/7, 12/7).

A vector is a quantity that describes not only the magnitude of an object but also its movement or position with respect to another point or object. It is sometimes referred to as a Euclidean vector, a geometric vector, or a spatial vector.

To find the coordinates of the vector AT in the given base, we first need to find the coordinates of the vectors AB and AC. Let's start by finding the coordinates of vector AB.

Since we know the coordinates of points A and B, we can find the vector AB by subtracting the coordinates of point A from the coordinates of point B:

AB = B - A = (-1, 4) - (0, 0) = (-1, 4)

Similarly, we can find the coordinates of vector AC:

AC = C - A = (5/8, 0) - (0, 0) = (5/8, 0)

Now, let's find the coordinates of the vector AT. To do this, we first need to find the coordinates of point T. We can use the method of intersecting lines to find the coordinates of T.

The equation of the line BB' can be written as:

BB': (y - 4x) = 4(4 - x)

Simplifying this equation, we get:

BB': y = -4x + 20

Similarly, the equation of line CC' can be written as:

CC': (y - 5x/3) = 3x/5

Simplifying this equation, we get:

CC': y = (3/5)x + 5/3

To find the coordinates of point T, we need to solve the system of equations formed by the two equations above. Solving for x and y, we get:

x = 8/7

y = 12/7

Therefore, the coordinates of point T are (8/7, 12/7). Now, to find the coordinates of vector AT, we can use the following formula:

AT = T - A

Substituting the coordinates of A and T, we get:

AT = (8/7, 12/7) - (0, 0) = (8/7, 12/7)

Therefore, the coordinates of vector AT in the given base are (8/7, 12/7).

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The expected weight of a package of 25 boxes is 800 ounces, with a standard deviation of 6.25 ounces.

To determine the expected weight of a package of 25 boxes, we need to use the properties of expected value and standard deviation.

First, we know that the expected value of one box is 32 ounces. Therefore, the expected value of 25 boxes packaged together is simply 25 multiplied by 32, which equals 800 ounces.

Next, we need to take into account the standard deviation of the weights. Since the weights of each box are considered to be independent of each other, we can use the formula for the standard deviation of the sum of independent random variables:

σ_total = sqrt(n * σ^2)

where σ_total is the standard deviation of the sum of n independent random variables with standard deviation σ.

In this case, n is 25 and σ is 1.5 ounces. Plugging these values into the formula, we get:

σ_total = sqrt(25 * 1.5^2) = 6.25 ounces

Therefore, the expected weight of a package of 25 boxes is 800 ounces, with a standard deviation of 6.25 ounces.

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The eigenvalues and eigenvectors of [A] are:

λ1 = 5, v1 = [2, -3, 1]

λ2 = -1,

(a) The matrix [A] is invertible if its determinant is non-zero. Therefore, we can compute the determinant of [A] as follows:

det([A]) = x * (33 - 51) - 15 * (23 - 50) + 7 * (21 - 30)

= x * (-2) - 15 * 6 + 7 * 2

= -2x - 88

[Note: we used the formula for the determinant of a 3 x 3 matrix in terms of its elements.]

Since [A] is not invertible, its determinant must be zero. Therefore, we can set the determinant equal to zero and solve for x:

-2x - 88 = 0

x = -44

Therefore, x = -44 if [A] is not invertible.

(b) To find the eigenvalues and eigenvectors of [A], we need to solve the characteristic equation:

det([A] - λ[I]) = 0

where λ is the eigenvalue and I is the identity matrix of the same size as [A].

We have:

[A] - λ[I] = x-λ 15 7

2 x-λ 5

0 1 x-λ

Therefore, the characteristic equation is:

det([A] - λ[I]) = (x-λ) [(x-λ)(x-λ) - 51] - 15 [2*(x-λ) - 01] + 7 [21 - 5*0] = 0

Simplifying this equation, we get:

(x-λ)^3 - 5(x-λ) - 30 = 0

This is a cubic equation that can be solved using various methods, such as using the cubic formula or using numerical methods. The solutions to this equation are the eigenvalues of [A].

By solving the equation, we find the following three eigenvalues:

λ1 = 5

λ2 = -1

λ3 = 2

To find the eigenvectors corresponding to each eigenvalue, we need to solve the system of linear equations:

([A] - λ[I])v = 0

where v is the eigenvector corresponding to the eigenvalue λ. We can write this system of equations for each eigenvalue and solve for the corresponding eigenvector.

For λ1 = 5, we have:

[A]v = 5v

(x-5)v1 + 15v2 + 7v3 = 0

2v1 + (x-5)v2 + 5v3 = 0

v2 + 3v3 = 0

Using the last equation, we can choose v3 = 1 and v2 = -3. Substituting these values in the second equation, we get v1 = 2. Therefore, the eigenvector corresponding to λ1 = 5 is:

v1 = 2

v2 = -3

v3 = 1

Similarly, we can solve for the eigenvectors corresponding to λ2 = -1 and λ3 = 2. The final eigenvectors are:

For λ2 = -1:

v1 = 1

v2 = 0

v3 = -1

For λ3 = 2:

v1 = -1

v2 = 1

v3 = -1

Therefore, the eigenvalues and eigenvectors of [A] are:

λ1 = 5, v1 = [2, -3, 1]

λ2 = -1,

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The solution to the inequality is x > -10.

We have,

To solve the inequality 10 - 6x < 70, we need to isolate the variable x on one side of the inequality.

First, we can simplify the left-hand side of the inequality by subtracting 10 from both sides:

10 - 6x < 70

-6x < 60

Next, we can isolate x by dividing both sides of the inequality by -6, remembering to reverse the direction of the inequality because we are dividing by a negative number:

x > -10

Thus,

The solution to the inequality is x > -10, which means that any value of x that is greater than -10 will make the inequality true.

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The value of - (the point estimate of the difference of proportions) is 0.02. Option C (0.02) is the correct answer.

To find the value of the point estimate of the difference of proportions, we need to subtract the sample proportion of one group from the sample proportion of the other group.

Let's denote the sample proportion of group 1 as p1 and the sample proportion of group 2 as p2. Then, the point estimate of the difference of proportions can be calculated as:

^p1 - ^p2

where ^p1 = 0.12 and ^p2 = 0.1 (as given in the question).

Substituting the values, we get:

^p1 - ^p2 = 0.12 - 0.1 = 0.02


It is important to note that this is just a point estimate based on the given sample statistics, and the true difference of proportions in the population may differ. We can calculate a margin of error and construct a confidence interval to estimate the range in which the true difference of proportions may lie.

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The 95% confidence interval for the true proportion of students who work a part-time job is approximately (0.4014, 0.4986), and the margin of error is approximately 0.0486. So, the closest answer among the options provided is 0.049.

To construct a 95% confidence interval for the true proportion of students who work a part-time job and find the margin of error, follow these steps:

1. Determine the sample proportion (p-hat):

Divide the number of students who work a part-time job (180) by the total number of students (400).
p-hat = [tex]\frac{180}{400}=0.45[/tex]

2. Determine the critical value (z) for a 95% confidence interval. Using a z-table, the critical value is approximately 1.96.

3. Calculate the standard error (SE) of the sample proportion:

SE =[tex]\frac{\sqrt{(p-hat)(1-p-hat)}}{n}[/tex] = [tex]\frac{\sqrt{(0.45)(1-0.45)}}{400}[/tex]≈ 0.0248

4. Calculate the margin of error (ME) by multiplying the critical value (z) by the standard error (SE):
ME = 1.96×0.0248 ≈ 0.0486

5. Construct the confidence interval by adding and subtracting the margin of error from the sample proportion:
Lower bound: 0.45 - 0.0486 ≈ 0.4014
Upper bound: 0.45 + 0.0486 ≈ 0.4986

So, the closest answer among the options provided is the fourth option 0.049.

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